Back button w/ Load more option

I am using the Load more option to show 4 posts at a time. It works as expected, however if you user clicks “load more” and selects a post that has been loaded via ajax, user is take to the post – however, when user clicks back- it collapses all of the posts to the initial first grouping – which is not a great UX. Is there a way to ensure that the posts that have been loaded with “load more” stay open when user hits back button?

appreciate any solutions!